RECEIVE CHANNEL PROGRAMMING REGISTER (RPRX REGISTER)

Address

Data

Configuration

D7

D6

D5

D4

D3

D2

D1

D0

P

1

1

1

X

X

0

X

Low Frequency Wide Band Selected (Figure 7b) (Note 1)

X

X

1

X

Low Frequency Narrow Band Selected (Figure 7c)

X

X

X

0

Carrier Level Detector Delay Enabled*

X

X

X

1

Carrier Level Detector Delay Disabled.

Note 1 : In active tone detection mode (MOD/DTMF = Ø, MC/BC = 1, RTS = 1 see op. modes),

The low frequency wide band is automatically selected for the receive channel, whatever the RPRX register programming value.

After a switch back to modem mode (MOD/DTMF = 1, MC/BC = Ø or 1) the RPRX register indicates again the value programmed

before the active tone detection mode.

RTS

MC/BC and MOD/DTMF

TxD or PRD

1

2

3

4

5

6

78

9

4

Figure 5 : 1st Case : Programmation without Data Transmission

5

6

10

11

11

D0

Data

n

D7

Data

n

Data

n1

RTS

MC/BC and

MOD/DTMF

TxD or PRD

Figure 6 : 2nd Case : Programmation with TxD During Data Transmission

INPUT SHIFT REGISTER ACCESS

TS7514

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